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https://issues.apache.org/jira/browse/CASSANDRA-12189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15382318#comment-15382318
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Mike Adamson commented on CASSANDRA-12189:
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bq. In context of CQLsh I don't see a way to distinguish between the end of
input and incorrectly closed $$. Do you think it's possible?
No, I don't. I couldn't find a way of covering all these cases so I opted for
letting it work correctly for valid input.
> $$ escaped string literals are not handled correctly in cqlsh
> -------------------------------------------------------------
>
> Key: CASSANDRA-12189
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12189
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: Mike Adamson
> Assignee: Mike Adamson
> Fix For: 3.x
>
>
> The syntax rules for pg ($$) escaped string literals in cqlsh do not match
> the lexer rule for this type in Lexer.g.
> The {{unclosedPgString}} rule is not correctly matching pg string literals in
> multi-line statements so:
> {noformat}
> INSERT INTO test.test (id) values (
> ...$$<xml/>
> {noformat}
> fails with a syntax error at the forward slash.
> Both {{pgStringLiteral}} and {{unclosedPgString}} fail with the following
> string
> {noformat}
> $$a$b$$
> {noformat}
> where this is allowed by the CQL lexer rule.
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